FR2697919B1 - MULTIPOLAR WINDING METAL DETECTOR WITH NEUTRALIZING EFFECT ELIMINATION. - Google Patents

MULTIPOLAR WINDING METAL DETECTOR WITH NEUTRALIZING EFFECT ELIMINATION.

Info

Publication number
FR2697919B1
FR2697919B1 FR9309601A FR9309601A FR2697919B1 FR 2697919 B1 FR2697919 B1 FR 2697919B1 FR 9309601 A FR9309601 A FR 9309601A FR 9309601 A FR9309601 A FR 9309601A FR 2697919 B1 FR2697919 B1 FR 2697919B1
Authority
FR
France
Prior art keywords
metal detector
neutralizing effect
winding metal
effect elimination
multipolar winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
FR9309601A
Other languages
French (fr)
Other versions
FR2697919A1 (en
Inventor
Alessandro Manneschi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of FR2697919A1 publication Critical patent/FR2697919A1/en
Application granted granted Critical
Publication of FR2697919B1 publication Critical patent/FR2697919B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
FR9309601A 1992-11-11 1993-08-04 MULTIPOLAR WINDING METAL DETECTOR WITH NEUTRALIZING EFFECT ELIMINATION. Expired - Lifetime FR2697919B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT92AR000026A IT1265721B1 (en) 1992-11-11 1992-11-11 METAL DETECTOR WITH MULTIPOLAR WINDINGS WITH THE ELIMINATION OF NEUTRALIZING EFFECTS

Publications (2)

Publication Number Publication Date
FR2697919A1 FR2697919A1 (en) 1994-05-13
FR2697919B1 true FR2697919B1 (en) 1996-01-05

Family

ID=11334734

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9309601A Expired - Lifetime FR2697919B1 (en) 1992-11-11 1993-08-04 MULTIPOLAR WINDING METAL DETECTOR WITH NEUTRALIZING EFFECT ELIMINATION.

Country Status (5)

Country Link
US (1) US5498959A (en)
DE (1) DE4338436C2 (en)
ES (1) ES2074940B1 (en)
FR (1) FR2697919B1 (en)
IT (1) IT1265721B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606675A1 (en) * 1996-02-22 1997-08-28 Siemens Ag Method and device for detecting an object in an area to be monitored
KR100228251B1 (en) * 1997-12-20 1999-11-01 박병용 Gun type detecting system
WO2000052499A1 (en) * 1999-03-03 2000-09-08 Potchefstroom University For Christian Higher Education Foreign material sensor utilizing a multipole magnetic field
US6362739B1 (en) 1999-09-22 2002-03-26 Garry L. Burton Passive security device for detecting ferromagnetic objects
ITAR20000040A1 (en) 2000-09-08 2002-03-08 Alessandro Manneschi TRANSPONDER READER TRANSDUCER FOR PASSAGE CONTROL
US7352180B2 (en) 2003-10-02 2008-04-01 Alessandro Manneschi Magnetic resonance detector for detecting non-authorized materials in footwear
FR2888340B1 (en) 2005-07-11 2007-10-19 Alessandro Manneschi TEST DEVICE FOR PORTIC DETECTOR OF METALS
EP1750147B1 (en) 2005-08-04 2014-04-09 Alessandro Manneschi Metal detector
GB2441346B (en) * 2006-09-01 2011-04-13 Qinetiq Ltd Metal object detecting apparatus
US11409017B2 (en) 2018-06-20 2022-08-09 Eriez Manufacturing Co. Metal detector coil configuration to eliminate orientation effect

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758849A (en) * 1972-03-31 1973-09-11 Sperry Rand Corp Metal detector system having identical balanced field coil system on opposite sides of a detection zone
US4063230A (en) * 1975-06-12 1977-12-13 The Magnavox Company Balanced field theft detection system
US4135183A (en) * 1977-05-24 1979-01-16 Minnesota Mining And Manufacturing Company Antipilferage system utilizing "figure-8" shaped field producing and detector coils
US4344074A (en) * 1981-04-02 1982-08-10 Sperry Corporation Magnetic field producing apparatus
GB2110825B (en) * 1981-11-06 1986-04-30 Outokumpu Oy Apparatus for detecting metal objects
US4769631A (en) * 1986-06-30 1988-09-06 Sensormatic Electronics Corporation Method, system and apparatus for magnetic surveillance of articles
IT1214991B (en) * 1986-12-03 1990-01-31 Manneschi Giovanni COLUMN WITH PLURALITY OF WINDINGS.
IT1214993B (en) * 1986-12-10 1990-01-31 Manneschi Alessandro METAL DETECTOR WITH MAGNETIC SCAN OF THE TRANSIT VOLUME.
US4866424A (en) * 1988-01-11 1989-09-12 Eg&G Astrophysics Research Corporation Metal detector coil
FI84209C (en) * 1988-11-01 1991-10-25 Outokumpu Oy METALLDETEKTOR.
IT1242640B (en) * 1990-12-06 1994-05-16 Saima Sicurezza Spa CAB WITH METAL DETECTOR TO PROTECT ACCESS WITH VARIABLE AMPLITUDE INPUT
IT1249278B (en) * 1991-06-06 1995-02-21 Alessandro Manneschi Metal detector with electromagnetic transducers out of alignment and circuit for correcting non-uniformities
DE4240921C1 (en) * 1992-12-04 1994-05-11 Alessandro Manneschi Metal detector for locating hidden weapons - compares signals using reception windings at different heights, to correct non-linearity

Also Published As

Publication number Publication date
ES2074940B1 (en) 1997-07-01
IT1265721B1 (en) 1996-12-02
DE4338436C2 (en) 1996-03-14
ITAR920026A1 (en) 1994-05-12
ES2074940R (en) 1996-11-16
US5498959A (en) 1996-03-12
ITAR920026A0 (en) 1992-11-11
DE4338436A1 (en) 1994-06-01
ES2074940A2 (en) 1995-09-16
FR2697919A1 (en) 1994-05-13

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